ARROYO AND SMALL STREAM FLOOD ADVISORY FOR... SOUTHWESTERN CATRON COUNTY IN WEST CENTRAL NEW MEXICO UNTIL 100 AM MDT AT 954 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY RAIN FROM A BROAD COMPLEX OF SHOWERS AND THUNDERSTORMS CROSSING THE SAN FRANCISCO RIVER AND TULAROSA RIVER. PARTS OF SOUTHWEST CATRON COUNTY ALONG THE ARIZONA BORDER THAT RECEIVED HEAVY RAIN YESTERDAY WERE ALSO RECEIVING ANOTHER ROUND OF MODERATE TO HEAVY RAIN. AT 8 PM MDT FLASH FLOODING WAS REPORTED IN LUNA...AND HEAVY RUNOFF IS EXPECTED TO DRAIN DOWN THE SAN FRANCISCO RIVER PRODUCING HAZARDOUS WATER LEVELS TO THE ARIZONA BORDER. FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTH CENTRAL SIERRA COUNTY UNTIL 10:30 PM MDT... AT 7:56 PM MDT ...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING ACROSS THE WARNED AREA WITH WATER CROSSING THE BRIDGE ON HIGHWAY 142 SOUTHEAST OF MONTICELLO AND PLACITAS. THIS WATER WILL DRAIN TOWARD INTERSTATE 25 IN ALAMOSA CREEK OVER THE COMING HOURS. LOCATIONS IMPACTED INCLUDE... MONTICELLO ... PLACITAS... CUCHILLO... ALAMOSA CANYON. DON'T CROSS FLOODED ROADS. THE UPPER AIR PATTERN OVER THE STATE WILL UNDERGO A SHIFT FROM THE HIGH PRESSURE CENTER ALOFT OVER SOUTHEAST NEW MEXICO TO THE RIDGE AXIS STRETCHED THROUGH THE GREAT BASIN INTO SOUTHEAST ARIZONA BY TUESDAY. THIS WILL ALLOW SURFACE FRONTS TO WORK THEIR WAY SOUTHWARD INTO THE EASTERN PLAINS. ONE SUCH FRONT IS EXPECTED TO REACH THE EAST SLOPES OF THE CENTRAL MOUNTAIN CHAIN TUESDAY NIGHT...AND COULD POSSIBLY REINFORCE LOW LEVEL MOISTURE INTO THE RIO GRANDE VALLEY. THE UPSHOT OF THE PATTERN CHANGE WILL BE THE FOCUS FOR RAIN SHIFTING TO THE CENTRAL AND EAST. THIS PATTERN IS FORECAST TO PERSIST INTO THE COMING WEEKEND.